#include "pcode.h"
#include "ralloc.h"
+#if defined(__BORLANDC__) || defined(_MSC_VER)
+#define STRCASECMP stricmp
+#else
+#define STRCASECMP strcasecmp
+#endif
+
+pCodeOp *popCopyGPR2Bit(pCodeOpReg *pc, int bitval);
+
pCodeOp *newpCodeOpWild(int id, pCodePeep *pcp, pCodeOp *subtype);
pCode *newpCodeWild(int pCodeID, pCodeOp *optional_operand, pCodeOp *optional_label);
pCode * findNextInstruction(pCode *pc);
-char *Safe_strdup(char *str);
-int getpCode(char *mnem);
+int getpCode(char *mnem,int dest);
+void pBlockMergeLabels(pBlock *pb);
+char *pCode2str(char *str, int size, pCode *pc);
+
+extern pCodeInstruction *pic14Mnemonics[];
+
/****************************************************************/
/*
static pBlock *curBlock=NULL;
+/****************************************************************/
+/* */
+/* max wild cards in a peep rule */
+/* */
+/****************************************************************/
+
+static int sMaxWildVar = 0;
+static int sMaxWildMnem = 0;
+
+
typedef struct pCodeToken
{
int tt; // token type;
typedef enum {
+ PCT_NULL=0,
PCT_SPACE=1,
PCT_PERCENT,
PCT_COLON,
PCP_STR,
PCP_WILDVAR,
PCP_WILDSTR,
- PCP_COMMA
+ PCP_COMMA,
+ PCP_COMMENT
} pCodePatterns;
static char pcpat_label[] = {PCT_PERCENT, PCT_NUMBER, PCT_COLON, 0};
static char pcpat_wildString[] = {PCT_PERCENT, PCT_STRING, 0};
static char pcpat_wildVar[] = {PCT_PERCENT, PCT_NUMBER, 0};
static char pcpat_comma[] = {PCT_COMMA, 0};
+static char pcpat_comment[] = {PCT_COMMENT, 0};
typedef struct pcPattern {
{PCP_STR, pcpat_string, NULL},
{PCP_WILDVAR, pcpat_wildVar, NULL},
{PCP_COMMA, pcpat_comma, NULL},
+ {PCP_COMMENT, pcpat_comment, NULL},
{PCP_NUMBER, pcpat_number, NULL}
};
// Assembly Line Token
typedef enum {
ALT_LABEL=1,
+ ALT_COMMENT,
ALT_MNEM0,
+ ALT_MNEM0A,
ALT_MNEM1,
ALT_MNEM1A,
ALT_MNEM1B,
ALT_MNEM2A
} altPatterns;
+static char alt_comment[] = { PCP_COMMENT, 0};
static char alt_label[] = { PCP_LABEL, 0};
static char alt_mnem0[] = { PCP_STR, 0};
+static char alt_mnem0a[] = { PCP_WILDVAR, 0};
static char alt_mnem1[] = { PCP_STR, PCP_STR, 0};
static char alt_mnem1a[] = { PCP_STR, PCP_WILDVAR, 0};
static char alt_mnem1b[] = { PCP_STR, PCP_NUMBER, 0};
static char alt_mnem2a[] = { PCP_STR, PCP_WILDVAR, PCP_COMMA, PCP_STR, 0};
static void * cvt_altpat_label(void *pp);
+static void * cvt_altpat_comment(void *pp);
static void * cvt_altpat_mnem0(void *pp);
+static void * cvt_altpat_mnem0a(void *pp);
static void * cvt_altpat_mnem1(void *pp);
static void * cvt_altpat_mnem1a(void *pp);
static void * cvt_altpat_mnem1b(void *pp);
pcPattern altArr[] = {
{ALT_LABEL, alt_label, cvt_altpat_label},
+ {ALT_COMMENT, alt_comment,cvt_altpat_comment},
{ALT_MNEM2A, alt_mnem2a, cvt_altpat_mnem2a},
{ALT_MNEM2, alt_mnem2, cvt_altpat_mnem2},
{ALT_MNEM1B, alt_mnem1b, cvt_altpat_mnem1b},
{ALT_MNEM1A, alt_mnem1a, cvt_altpat_mnem1a},
{ALT_MNEM1, alt_mnem1, cvt_altpat_mnem1},
+ {ALT_MNEM0A, alt_mnem0a, cvt_altpat_mnem0a},
{ALT_MNEM0, alt_mnem0, cvt_altpat_mnem0},
};
#define ALTPATTERNS (sizeof(altArr)/sizeof(pcPattern))
+// forward declarations
+static void * DLL_append(_DLL *list, _DLL *next);
+
+/*-----------------------------------------------------------------*/
+/* cvt_extract_destination - helper function extracts the register */
+/* destination from a parsedPattern. */
+/* */
+/*-----------------------------------------------------------------*/
+static int cvt_extract_destination(parsedPattern *pp)
+{
+
+ if(pp->pct[0].tt == PCT_STRING) {
+
+ // just check first letter for now
+
+ if(toupper(*pp->pct[0].tok.s) == 'F')
+ return 1;
+
+ } else if (pp->pct[0].tt == PCT_NUMBER) {
+
+ if(pp->pct[0].tok.n)
+ return 1;
+ }
+
+ return 0;
+
+}
+
+/*-----------------------------------------------------------------*/
+/* pCodeOp *cvt_extract_status(char *reg, char *bit) */
+/* if *reg is the "status" register and *bit is one of the */
+/* status bits, then this function will create a new pCode op */
+/* containing the status register. */
+/*-----------------------------------------------------------------*/
+
+static pCodeOp *cvt_extract_status(char *reg, char *bit)
+{
+ int len;
+
+ if(STRCASECMP(reg, pc_status.pcop.name))
+ return NULL;
+
+ len = strlen(bit);
+
+ if(len == 1) {
+ // check C,Z
+ if(toupper(*bit) == 'C')
+ return PCOP(popCopyGPR2Bit(&pc_status,PIC_C_BIT));
+ if(toupper(*bit) == 'Z')
+ return PCOP(popCopyGPR2Bit(&pc_status,PIC_Z_BIT));
+ }
+
+ // Check DC
+ if(len ==2 && toupper(bit[0]) == 'D' && toupper(bit[1]) == 'C')
+ return PCOP(popCopyGPR2Bit(&pc_status,PIC_DC_BIT));
+
+ return NULL;
+
+}
+
/*-----------------------------------------------------------------*/
/* cvt_altpat_label - convert assembly line type to a pCode label */
/* INPUT: pointer to the parsedPattern */
parsedPattern *p = pp;
fprintf(stderr,"altpat_label with ID = %d\n",p->pct[1].tok.n);
- return newpCodeOpLabel(-p->pct[1].tok.n);
+ return newpCodeLabel(-p->pct[1].tok.n);
+
+}
+
+/*-----------------------------------------------------------------*/
+/* cvt_altpat_comment - convert assembly line type to a comment */
+/* INPUT: pointer to the parsedPattern */
+/* */
+/* pp[0] - comment */
+/* */
+/* */
+/*-----------------------------------------------------------------*/
+static void * cvt_altpat_comment(void *pp)
+{
+ parsedPattern *p = pp;
+
+ fprintf(stderr,"altpat_comment = %s\n",p->pct[0].tok.s);
+ return newpCodeCharP(p->pct[0].tok.s);
}
/*-----------------------------------------------------------------*/
static void * cvt_altpat_mnem0(void *pp)
{
- fprintf(stderr,"altpat_mnem0\n");
- return NULL;
+ parsedPattern *p = pp;
+ int opcode;
+
+ pCodeInstruction *pci=NULL;
+
+ fprintf(stderr,"altpat_mnem0 %s\n", p->pct[0].tok.s);
+
+ opcode = getpCode(p->pct[0].tok.s,0);
+ if(opcode < 0) {
+ fprintf(stderr, "Bad mnemonic\n");
+ return NULL;
+ }
+
+ pci = PCI(newpCode(opcode, NULL));
+
+ if(!pci)
+ fprintf(stderr,"couldn't find mnemonic\n");
+
+
+ return pci;
}
/*-----------------------------------------------------------------*/
+/* cvt_altpat_mem0a - convert assembly line type to a wild pCode */
+/* instruction */
+/* */
+/* pp[0] - wild var */
+/* */
+/*-----------------------------------------------------------------*/
+static void * cvt_altpat_mnem0a(void *pp)
+{
+ parsedPattern *p = pp;
+
+ fprintf(stderr,"altpat_mnem0a wild mnem # %d\n", p[0].pct[1].tok.n);
+
+ /* Save the index of the maximum wildcard mnemonic */
+
+ if(p[0].pct[1].tok.n > sMaxWildVar)
+ sMaxWildMnem = p[0].pct[1].tok.n;
+
+ return newpCodeWild(p[0].pct[1].tok.n,NULL,NULL);
+
+}
+
+/*-----------------------------------------------------------------*/
+/* cvt_altpat_mem1 - convert assembly line type to a pCode */
+/* instruction with 1 operand. */
+/* */
+/* pp[0] - mnem */
+/* pp[1] - Operand */
+/* */
/*-----------------------------------------------------------------*/
static void * cvt_altpat_mnem1(void *pp)
{
- fprintf(stderr,"altpat_mnem1\n");
- return NULL;
+
+ parsedPattern *p = pp;
+ int opcode;
+
+ pCodeInstruction *pci=NULL;
+ pCodeOp *pcosubtype;
+
+ fprintf(stderr,"altpat_mnem1 %s var %s\n", p->pct[0].tok.s,p[1].pct[0].tok.s);
+
+ opcode = getpCode(p->pct[0].tok.s,0);
+ if(opcode < 0) {
+ fprintf(stderr, "Bad mnemonic\n");
+ return NULL;
+ }
+
+ if(pic14Mnemonics[opcode]->bit_inst)
+ pcosubtype = newpCodeOp(p[1].pct[0].tok.s,PO_BIT);
+ else
+ pcosubtype = newpCodeOp(p[1].pct[0].tok.s,PO_GPR_REGISTER);
+
+
+ pci = PCI(newpCode(opcode, pcosubtype));
+
+ if(!pci)
+ fprintf(stderr,"couldn't find mnemonic\n");
+
+
+ return pci;
}
/*-----------------------------------------------------------------*/
static void * cvt_altpat_mnem1a(void *pp)
{
parsedPattern *p = pp;
+ int opcode;
pCodeInstruction *pci=NULL;
+ pCodeOp *pcosubtype;
+
+ fprintf(stderr,"altpat_mnem1a %s var %d\n", p->pct[0].tok.s,p[1].pct[1].tok.n);
+
+ opcode = getpCode(p->pct[0].tok.s,0);
+ if(opcode < 0) {
+ fprintf(stderr, "Bad mnemonic\n");
+ return NULL;
+ }
- // pCodeOp *pcw;
+ if(pic14Mnemonics[opcode]->bit_inst)
+ pcosubtype = newpCodeOpBit(NULL,-1,0);
+ else
+ pcosubtype = newpCodeOp(NULL,PO_GPR_REGISTER);
- // pcw = newpCodeOpWild(0,pcp,newpCodeOp(NULL,PO_GPR_REGISTER));
- fprintf(stderr,"altpat_mnem1a %s var %d\n", p->pct[0].tok.s,p[1].pct[1].tok.n);
+ pci = PCI(newpCode(opcode,
+ newpCodeOpWild(p[1].pct[1].tok.n, curPeep, pcosubtype)));
-/*
- pci = PCI(newpCode(getpCode(p->pct[0].tok.s),
- newpCodeOpWild(p[1].pct[1].tok.n, curPeep, NULL)));
+ /* Save the index of the maximum wildcard variable */
+ if(p[1].pct[1].tok.n > sMaxWildVar)
+ sMaxWildVar = p[1].pct[1].tok.n;
if(!pci)
fprintf(stderr,"couldn't find mnemonic\n");
-*/
+
return pci;
}
/*-----------------------------------------------------------------*/
static void * cvt_altpat_mnem1b(void *pp)
{
- fprintf(stderr,"altpat_mnem1b\n");
- return NULL;
+ parsedPattern *p = pp;
+ int opcode;
+
+ pCodeInstruction *pci=NULL;
+
+ fprintf(stderr,"altpat_mnem1b %s var %d\n", p->pct[0].tok.s,p[1].pct[0].tok.n);
+
+ opcode = getpCode(p->pct[0].tok.s,0);
+ if(opcode < 0) {
+ fprintf(stderr, "Bad mnemonic\n");
+ return NULL;
+ }
+
+ pci = PCI(newpCode(opcode, newpCodeOpLit(p[1].pct[0].tok.n) ));
+
+ if(!pci)
+ fprintf(stderr,"couldn't find mnemonic\n");
+
+
+ return pci;
}
/*-----------------------------------------------------------------*/
/*-----------------------------------------------------------------*/
static void * cvt_altpat_mnem2(void *pp)
{
- fprintf(stderr,"altpat_mnem2\n");
- return NULL;
+ parsedPattern *p = pp;
+ int opcode;
+ int dest;
+
+ pCodeInstruction *pci=NULL;
+ pCodeOp *pcosubtype;
+
+ dest = cvt_extract_destination(&p[3]);
+
+ fprintf(stderr,"altpat_mnem2 %s var %s destination %s(%d)\n",
+ p->pct[0].tok.s,
+ p[1].pct[0].tok.s,
+ p[3].pct[0].tok.s,
+ dest);
+
+
+ opcode = getpCode(p->pct[0].tok.s,dest);
+ if(opcode < 0) {
+ fprintf(stderr, "Bad mnemonic\n");
+ return NULL;
+ }
+
+ if(pic14Mnemonics[opcode]->bit_inst) {
+ pcosubtype = cvt_extract_status(p[1].pct[0].tok.s, p[3].pct[0].tok.s);
+ if(pcosubtype == NULL) {
+ fprintf(stderr, "bad operand?\n");
+ return NULL;
+ }
+
+ } else
+ pcosubtype = newpCodeOp(p[1].pct[0].tok.s,PO_GPR_REGISTER);
+
+
+ pci = PCI(newpCode(opcode,pcosubtype));
+
+ if(!pci)
+ fprintf(stderr,"couldn't find mnemonic\n");
+
+ return pci;
+
}
/*-----------------------------------------------------------------*/
+/* cvt_altpat_mem2a - convert assembly line type to a pCode */
+/* instruction with 1 wild operand and a */
+/* destination operand (e.g. w or f) */
+/* */
+/* pp[0] - mnem */
+/* pp[1] - wild var */
+/* pp[2] - comma */
+/* pp[3] - destination */
+/* */
/*-----------------------------------------------------------------*/
static void * cvt_altpat_mnem2a(void *pp)
{
- fprintf(stderr,"altpat_mnem2a\n");
- return NULL;
-}
+ parsedPattern *p = pp;
+ int opcode;
+ int dest;
+ pCodeInstruction *pci=NULL;
+ pCodeOp *pcosubtype;
+ dest = cvt_extract_destination(&p[3]);
+ fprintf(stderr,"altpat_mnem2a %s var %d destination %s(%d)\n",
+ p->pct[0].tok.s,
+ p[1].pct[1].tok.n,
+ p[3].pct[0].tok.s,
+ dest);
-#if 0
-/*-----------------------------------------------------------------*/
-/*-----------------------------------------------------------------*/
-static pCode * cvt_pcpat_wildMnem(parsedPattern *pp)
-{
- fprintf(stderr,"pcpat_wildMnem\n");
- return NULL;
-}
-/*-----------------------------------------------------------------*/
-/*-----------------------------------------------------------------*/
-static pCode * cvt_pcpat_Mnem(parsedPattern *pp)
-{
- fprintf(stderr,"pcpat_Mnem\n");
- return NULL;
-}
-/*-----------------------------------------------------------------*/
-/*-----------------------------------------------------------------*/
-static pCode * cvt_pcpat_wildVar(parsedPattern *pp)
-{
- fprintf(stderr,"pcpat_wildVar\n");
- return NULL;
-}
-/*-----------------------------------------------------------------*/
-/*-----------------------------------------------------------------*/
-static pCode * cvt_pcpat_var(parsedPattern *pp)
-{
- fprintf(stderr,"pcpat_var\n");
- return NULL;
-}
-#endif
+
+ opcode = getpCode(p->pct[0].tok.s,dest);
+ if(opcode < 0) {
+ fprintf(stderr, "Bad mnemonic\n");
+ return NULL;
+ }
+
+ if(pic14Mnemonics[opcode]->bit_inst)
+ pcosubtype = newpCodeOp(NULL,PO_BIT);
+ else
+ pcosubtype = newpCodeOp(NULL,PO_GPR_REGISTER);
+ pci = PCI(newpCode(opcode,
+ newpCodeOpWild(p[1].pct[1].tok.n, curPeep, pcosubtype)));
+ /* Save the index of the maximum wildcard variable */
+ if(p[1].pct[1].tok.n > sMaxWildVar)
+ sMaxWildVar = p[1].pct[1].tok.n;
+ if(!pci)
+ fprintf(stderr,"couldn't find mnemonic\n");
+
+ return pci;
+
+}
/*-----------------------------------------------------------------*/
+/* tokenizeLineNode - Convert a string (of char's) that was parsed */
+/* by SDCCpeeph.c into a string of tokens. */
+/* */
+/* */
+/* The tokenizer is of the classic type. When an item is encounterd*/
+/* it is converted into a token. The token is a structure that */
+/* encodes the item's type and it's value (when appropriate). */
+/* */
+/* Accepted token types: */
+/* SPACE NUMBER STRING % : , ; */
+/* */
+/* */
+/* */
/*-----------------------------------------------------------------*/
-static void parseLineNode(char *ln)
+static void tokenizeLineNode(char *ln)
{
- tokIdx = 0;
+ tokIdx = 0; // Starting off at the beginning
+ tokArr[0].tt = PCT_NULL; // and assume invalid character for first token.
if(!ln || !*ln)
return;
while(*ln) {
if(isspace(*ln)) {
+ // add a SPACE token and eat the extra spaces.
tokArr[tokIdx++].tt = PCT_SPACE;
while (isspace (*ln))
ln++;
if(isdigit(*ln)) {
tokArr[tokIdx].tt = PCT_NUMBER;
- tokArr[tokIdx++].tok.n = strtol(ln, &ln, 10);
+ tokArr[tokIdx++].tok.n = strtol(ln, &ln, 0);
continue;
case ';':
tokArr[tokIdx].tok.s = Safe_strdup(ln);
tokArr[tokIdx++].tt = PCT_COMMENT;
+ tokArr[tokIdx].tt = PCT_NULL;
return;
case ',':
tokArr[tokIdx++].tt = PCT_COMMA;
buffer[i] = 0;
tokArr[tokIdx].tok.s = Safe_strdup(buffer);
- //fprintf(stderr," string %s",tokArr[tokIdx].tok.s);
-
tokArr[tokIdx++].tt = PCT_STRING;
}
}
+
+ /* Advance to next character in input string .
+ * Note, if none of the tests passed above, then
+ * we effectively ignore the `bad' character.
+ * Since the line has already been parsed by SDCCpeeph,
+ * chance are that there are no invalid characters... */
+
ln++;
+
}
tokArr[tokIdx].tt = 0;
fputc(':',stderr);
break;
case PCT_COMMA:
- fprintf(stderr, " com ");
- fputc(',',stderr);
+ fprintf(stderr, " comma , ");
break;
case PCT_COMMENT:
+ fprintf(stderr, " comment ");
+ //fprintf(stderr,"%s",tokArr[i].tok.s);
+ break;
case PCT_STRING:
fprintf(stderr, " str ");
//fprintf(stderr,"%s",tokArr[i].tok.s);
case PCT_NUMBER:
fprintf(stderr, " num ");
//fprintf(stderr,"%d",tokArr[i].tok.n);
-
+ break;
+ case PCT_NULL:
+ fprintf(stderr, " null ");
}
}
int advTokIdx(int *v, int amt)
{
- if(*v + amt > tokIdx)
+ if((unsigned) (*v + amt) > tokIdx)
return 1;
*v += amt;
}
/*-----------------------------------------------------------------*/
+/* parseTokens - convert the tokens corresponding to a single line */
+/* of a peep hole assembly into a pCode object. */
+/* */
+/* */
+/* */
+/* */
+/* This is a simple parser that looks for strings of the type */
+/* allowed in the peep hole definition file. Essentially the format*/
+/* is the same as a line of assembly: */
+/* */
+/* label: mnemonic op1, op2, op3 ; comment */
+/* */
+/* Some of these items aren't present. It's the job of the parser */
+/* to determine which are and convert those into the appropriate */
+/* pcode. */
/*-----------------------------------------------------------------*/
-void dumpTokens(void)
+void parseTokens(void)
{
- int i;
+ unsigned i;
pCode *pc;
if(!tokIdx)
for(i=0; i<=tokIdx; i++)
dump1Token(tokArr[i].tt);
-
fputc('\n',stderr);
{
int lpcpIdx;
int ltokIdx =0;
int matching = 0;
- int j,k;
+ int j=0;
+ int k=0;
char * cPmnem = NULL; // Pointer to non-wild mnemonic (if any)
char * cP1stop = NULL;
lpcpIdx=0;
matching = 0;
- //fprintf(stderr,"ltokIdx = %d\n",ltokIdx);
- if( ((tokArr[ltokIdx].tt == PCT_SPACE) )//|| (tokArr[ltokIdx].tt == PCT_COMMA))
+ if( ((tokArr[ltokIdx].tt == PCT_SPACE) )
&& (advTokIdx(<okIdx, 1)) ) // eat space
break;
do {
j = pcComparePattern(&tokArr[ltokIdx], pcpArr[lpcpIdx].tokens, tokIdx +1);
if( j ) {
- //fprintf(stderr,"found token pattern match\n");
+
switch(pcpArr[lpcpIdx].pt) {
case PCP_LABEL:
if(state == PS_START){
j=k=0;
do {
int c;
- //fprintf(stderr,"comparing alt pattern %d (first token %d)\n",k,altArr[k].tokens[0]);
+
if( (c=altComparePattern( altArr[k].tokens, &parsedPatArr[j],10) ) ) {
- //fprintf(stderr," found a valid assembly line!!!\n");
+
if( altArr[k].f) {
pc = altArr[k].f(&parsedPatArr[j]);
if(pc && pc->print)
pc->print(stderr,pc);
- if(pc && pc->destruct) pc->destruct(pc);
+ //if(pc && pc->destruct) pc->destruct(pc); dumps core?
+ if(curBlock && pc)
+ addpCode2pBlock(curBlock, pc);
}
j += c;
}
}
while(j<=lparsedPatIdx && k<ALTPATTERNS);
-
+/*
fprintf(stderr,"\nConverting parsed line to pCode:\n\n");
j = 0;
j++;
}
while(j<lparsedPatIdx);
-
+*/
fprintf(stderr,"\n");
}
}
+/*-----------------------------------------------------------------*/
+/* */
+/*-----------------------------------------------------------------*/
+void peepRuleBlock2pCodeBlock( lineNode *ln)
+{
+
+ if(!ln)
+ return;
+
+ for( ; ln; ln = ln->next) {
+
+ fprintf(stderr,"%s\n",ln->line);
+
+ tokenizeLineNode(ln->line);
+ parseTokens();
+
+ }
+}
+
+/*-----------------------------------------------------------------*/
+/* peepRuleCondition */
+/*-----------------------------------------------------------------*/
+static void peepRuleCondition(char *cond)
+{
+ if(!cond)
+ return;
+
+ fprintf(stderr,"\nCondition: %s\n",cond);
+
+ /* brute force compares for now */
+
+ if(STRCASECMP(cond, "NZ") == 0) {
+ fprintf(stderr,"found NZ\n");
+ curPeep->postFalseCond = PCC_Z;
+
+ }
+
+}
/*-----------------------------------------------------------------*/
/* peepRules2pCode - parse the "parsed" peep hole rules to generate*/
/* pCode. */
void peepRules2pCode(peepRule *rules)
{
peepRule *pr;
- lineNode *ln;
pCodePeepSnippets *pcps;
+ /* The rules are in a linked-list. Each rule has two portions */
+ /* There's the `target' and there's the `replace'. The target */
+ /* is compared against the SDCC generated code and if it */
+ /* matches, it gets replaced by the `replace' block of code. */
+ /* */
+ /* Here we loop through each rule and convert the target's and*/
+ /* replace's into pCode target and replace blocks */
+
for (pr = rules; pr; pr = pr->next) {
+
fprintf(stderr,"\nRule:\n\n");
pcps = Safe_calloc(1,sizeof(pCodePeepSnippets));
curPeep = pcps->peep = Safe_calloc(1,sizeof(pCodePeep));
- //peepSnippets = DLL_append((_DLL*)peepSnippets,(_DLL*)pcps);
- for(ln = pr->match; ln; ln = ln->next) {
- fprintf(stderr,"%s\n",ln->line);
+ curPeep->vars = NULL;
+ curPeep->wildpCodes = NULL; curPeep->wildpCodeOps = NULL;
+ curPeep->postFalseCond = PCC_NONE;
+ curPeep->postTrueCond = PCC_NONE;
- parseLineNode(ln->line);
- dumpTokens();
+ peepSnippets = DLL_append((_DLL*)peepSnippets,(_DLL*)pcps);
- }
+ curPeep->target = curBlock = newpCodeChain(NULL, 'W', NULL);
+ sMaxWildVar = 0;
+ sMaxWildMnem = 0;
+
+ /* Convert the target block */
+ peepRuleBlock2pCodeBlock(pr->match);
+
+ fprintf(stderr,"finished target, here it is in pcode form:\n");
+ printpBlock(stderr, curBlock);
+
+ fprintf(stderr,"target with labels merged:\n");
+ pBlockMergeLabels(curBlock);
+ printpBlock(stderr, curBlock);
fprintf(stderr,"\nReplaced by:\n");
- for(ln = pr->replace; ln; ln = ln->next)
- fprintf(stderr,"%s\n",ln->line);
- if(pr->cond)
- fprintf(stderr,"\nCondition: %s\n",pr->cond);
+ curPeep->replace = curBlock = newpCodeChain(NULL, 'W', NULL);
+
+ /* Convert the replace block */
+ peepRuleBlock2pCodeBlock(pr->replace);
+
+ fprintf(stderr,"finished replace block, here it is in pcode form:\n");
+ printpBlock(stderr, curBlock);
+
+ fprintf(stderr,"replace with labels merged:\n");
+ pBlockMergeLabels(curBlock);
+ printpBlock(stderr, curBlock);
+
+ peepRuleCondition(pr->cond);
+
+ /* The rule has been converted to pCode. Now allocate
+ * space for the wildcards */
+
+ ++sMaxWildVar;
+ curPeep->nvars = sMaxWildVar;
+ curPeep->vars = Safe_calloc(sMaxWildVar, sizeof(char *));
+
+ curPeep->nops = sMaxWildVar;
+ curPeep->wildpCodeOps = Safe_calloc(sMaxWildVar, sizeof(pCodeOp *));
+
+ curPeep->nwildpCodes = ++sMaxWildMnem;
+ curPeep->wildpCodes = Safe_calloc(sMaxWildMnem, sizeof(char *));
+
+
+ //return; // debug ... don't want to go through all the rules yet
}
}
void pCodePeepInit(void)
{
+#if 0
pBlock *pb;
// pCode *pc;
pCodePeep *pcp;
/* Declare a peep code snippet */
/* <FIXME> do I really need a separate struct just to DLL the snippets? */
/* e.g. I could put the DLL into the pCodePeep structure */
+
+ /*
+
+ target:
+
+ movwf %1
+ movf %1,w
+
+ replace:
+
+ movwf %1
+
+ Condition:
+ false condition - PCC_Z (Z bit is not used as input to subsequent code)
+ true condition - none
+ */
pcps = Safe_calloc(1,sizeof(pCodePeepSnippets));
pcp = pcps->peep = Safe_calloc(1,sizeof(pCodePeep));
peepSnippets = DLL_append((_DLL*)peepSnippets,(_DLL*)pcps);
replace:
btfss %0
- %1: %4
%3
+ %1: %4
The %3 and %4 are wild opcodes. Since the opcodes
are stored in a different array than the wild operands,
pCodeOp *pcwb;
// Create a new wild operand subtyped as a bit
- pcwb = newpCodeOpWild(0,pcp,newpCodeOpBit(NULL,-1));
+ pcwb = newpCodeOpWild(0,pcp,newpCodeOpBit(NULL,-1,0));
// Create a
pb = newpCodeChain(NULL, 'W',newpCode(POC_BTFSC,pcwb));
-
+#endif
}
/*-----------------------------------------------------------------*/
return 0;
}
+
+int pCodePeepMatchLabels(pCodePeep *peepBlock, pCode *pcs, pCode *pcd)
+{
+ int labindex;
+
+ /* Check for a label associated with this wild pCode */
+ // If the wild card has a label, make sure the source code does too.
+ if(pcd->label) {
+ pCode *pcl;
+
+ if(!pcs->label)
+ return 0;
+
+ pcl = pcd->label->pc;
+ //labindex = PCOW(pcl)->id;
+ labindex = -PCL(pcl)->key;
+ fprintf(stderr,"label id = %d (labindex = %d)\n",PCL(pcl)->key,labindex);
+ if(peepBlock->vars[labindex] == NULL) {
+ // First time to encounter this label
+ peepBlock->vars[labindex] = PCL(pcs->label->pc)->label;
+ fprintf(stderr,"first time for a label: %d %s\n",labindex, peepBlock->vars[labindex]);
+ } else {
+ if(strcmp(peepBlock->vars[labindex],PCL(pcs->label->pc)->label) != 0) {
+ fprintf(stderr,"labels don't match\n");
+ return 0;
+ }
+ fprintf(stderr,"matched a label\n");
+ }
+ } else {
+ fprintf(stderr,"destination doesn't have a label\n");
+
+ if(pcs->label)
+ return 0;
+ }
+
+ return 1;
+
+}
+
/*-----------------------------------------------------------------*/
/* pCodePeepMatchLine - Compare source and destination pCodes to */
/* see they're the same. */
+/* */
+/* In this context, "source" refers to the coded generated by gen.c*/
+/* and "destination" refers to a pcode in a peep rule. If the dest-*/
+/* ination has no wild cards, then MatchLine will compare the two */
+/* pcodes (src and dest) for a one-to-one match. If the destination*/
+/* has wildcards, then those get expanded. When a wild card is */
+/* encountered for the first time it autmatically is considered a */
+/* match and the object that matches it is referenced in the */
+/* variables or opcodes array (depending on the type of match). */
+/* */
+/* */
+/* Inputs: */
+/* *peepBlock - A pointer to the peepBlock that contains the */
+/* entire rule to which the destination pcode belongs*/
+/* *pcs - a pointer to the source pcode */
+/* *pcd - a pointer to the destination pcode */
+/* */
+/* Returns: */
+/* 1 - pcodes match */
+/* 0 - pcodes don't match */
+/* */
+/* */
/*-----------------------------------------------------------------*/
+
int pCodePeepMatchLine(pCodePeep *peepBlock, pCode *pcs, pCode *pcd)
{
int index; // index into wild card arrays
pcs->print(stderr,pcs);
pcd->print(stderr,pcd);
+ if(!pCodePeepMatchLabels(peepBlock, pcs, pcd))
+ return 0;
+
/* Compare the operands */
if(PCI(pcd)->pcop) {
if (PCI(pcd)->pcop->type == PO_WILD) {
fprintf(stderr,"destination is wild\n");
#ifdef DEBUG_PCODEPEEP
- if (index > peepBlock->nvars) {
+ if (index > peepBlock->nops) {
fprintf(stderr,"%s - variables exceeded\n",__FUNCTION__);
exit(1);
}
#endif
PCOW(PCI(pcd)->pcop)->matched = PCI(pcs)->pcop;
+ if(!peepBlock->wildpCodeOps[index]) {
+ peepBlock->wildpCodeOps[index] = PCI(pcs)->pcop;
+
+ //if(PCI(pcs)->pcop->type == PO_GPR_TEMP)
+
+ }
{
char *n;
- if(PCI(pcs)->pcop->type == PO_GPR_TEMP)
+ if(PCI(pcs)->pcop->type == PO_GPR_TEMP)
n = PCOR(PCI(pcs)->pcop)->r->name;
else
n = PCI(pcs)->pcop->name;
if(peepBlock->vars[index])
return (strcmp(peepBlock->vars[index],n) == 0);
else {
+ fprintf(stderr,"first time for a variable: %d, %s\n",index,n);
peepBlock->vars[index] = n; //PCI(pcs)->pcop->name;
return 1;
}
}
}
+ /* FIXME - need an else to check the case when the destination
+ * isn't a wild card */
} else
/* The pcd has no operand. Lines match if pcs has no operand either*/
return (PCI(pcs)->pcop == NULL);
if((pcd->type == PC_WILD) && (pcs->type == PC_OPCODE)) {
- int labindex;
index = PCW(pcd)->id;
peepBlock->wildpCodes[PCW(pcd)->id] = pcs;
- /* Check for a label associated with this wild pCode */
- // If the wild card has a label, make sure the source code does too.
- if(PCW(pcd)->label) {
- if(!pcs->label)
- return 0;
-
- labindex = PCOW(PCW(pcd)->label)->id;
- if(peepBlock->vars[labindex] == NULL) {
- // First time to encounter this label
- peepBlock->vars[labindex] = PCL(pcs->label->pc)->label;
- fprintf(stderr,"first time for a label\n");
- } else {
- if(strcmp(peepBlock->vars[labindex],PCL(pcs->label->pc)->label) != 0) {
- fprintf(stderr,"labels don't match\n");
- return 0;
- }
- fprintf(stderr,"matched a label\n");
- }
-
- }
+ if(!pCodePeepMatchLabels(peepBlock, pcs, pcd))
+ return 0;
if(PCW(pcd)->operand) {
PCOW(PCI(pcd)->pcop)->matched = PCI(pcs)->pcop;
if(pcs) {
fprintf(stderr," (next to match)\n");
pcs->print(stderr,pcs);
+ } else if(pcd->next) {
+ /* oops, we ran out of code, but there's more to the rule */
+ return 0;
}
return 1; /* wild card matches */
{
int i;
+ if(!pcp)
+ return;
- for(i=0;i<pcp->nvars; i++)
+ for(i=0;i<pcp->nvars; i++) {
pcp->vars[i] = NULL;
-
+ pcp->wildpCodeOps[i] = NULL;
+ }
}
/*-----------------------------------------------------------------*/
+/* pCodeInsertAfter - splice in the pCode chain starting with pc2 */
+/* into the pCode chain containing pc1 */
/*-----------------------------------------------------------------*/
void pCodeInsertAfter(pCode *pc1, pCode *pc2)
{
if(pc1->next)
pc1->next->prev = pc2;
+ pc2->pb = pc1->pb;
pc2->prev = pc1;
pc1->next = pc2;
switch(pcop->type) {
case PO_CRY:
case PO_BIT:
+ fprintf(stderr,"pCodeOpCopy bit\n");
pcopnew = Safe_calloc(1,sizeof(pCodeOpBit) );
PCOB(pcopnew)->bit = PCOB(pcop)->bit;
PCOB(pcopnew)->inBitSpace = PCOB(pcop)->inBitSpace;
case PO_WILD:
/* Here we expand the wild card into the appropriate type: */
/* By recursively calling pCodeOpCopy */
+ fprintf(stderr,"pCodeOpCopy wild\n");
if(PCOW(pcop)->matched)
pcopnew = pCodeOpCopy(PCOW(pcop)->matched);
else {
break;
case PO_LABEL:
+ fprintf(stderr,"pCodeOpCopy label\n");
pcopnew = Safe_calloc(1,sizeof(pCodeOpLabel) );
PCOLAB(pcopnew)->key = PCOLAB(pcop)->key;
break;
case PO_LITERAL:
case PO_IMMEDIATE:
+ fprintf(stderr,"pCodeOpCopy lit\n");
pcopnew = Safe_calloc(1,sizeof(pCodeOpLit) );
PCOL(pcopnew)->lit = PCOL(pcop)->lit;
break;
case PO_GPR_REGISTER:
case PO_GPR_TEMP:
- case PO_SFR_REGISTER:
+ case PO_GPR_BIT:
+ fprintf(stderr,"pCodeOpCopy GPR register\n");
+ pcopnew = Safe_calloc(1,sizeof(pCodeOpReg) );
+ PCOR(pcopnew)->r = PCOR(pcop)->r;
+ PCOR(pcopnew)->rIdx = PCOR(pcop)->rIdx;
+ fprintf(stderr," register index %d\n", PCOR(pcop)->r->rIdx);
+ break;
+
case PO_DIR:
+ fprintf(stderr,"pCodeOpCopy PO_DIR\n");
+ case PO_SFR_REGISTER:
case PO_STR:
case PO_NONE:
case PO_W:
case PO_STATUS:
case PO_FSR:
case PO_INDF:
+ case PO_PCL:
+ case PO_PCLATH:
+ fprintf(stderr,"pCodeOpCopy register type %d\n", pcop->type);
pcopnew = Safe_calloc(1,sizeof(pCodeOp) );
}
pcopnew->type = pcop->type;
- pcopnew->name = Safe_strdup(pcop->name);
+ if(pcop->name)
+ pcopnew->name = Safe_strdup(pcop->name);
+ else
+ pcopnew->name = NULL;
return pcopnew;
}
{
pCode *pc;
+
while(f && f!=t) {
fprintf(stderr,"delete pCode:\n");
pc = f->next;
f->print(stderr,f);
- //f->delete(f);
+ //f->delete(f); this dumps core...
+
f = pc;
+
}
}
while(peeprules) {
peepBlock = ((pCodePeepSnippets*)peeprules)->peep;
+ if(!peepBlock || !peepBlock->target || !peepBlock->target->pcHead)
+ goto next_rule;
+
pCodePeepClrVars(peepBlock);
pcin = pc;
fprintf(stderr," end of rule\n");
}
- if(matched && pcin) {
+ if(matched) {
/* So far we matched the rule up to the point of the conditions .
* In other words, all of the opcodes match. Now we need to see
* the `postFalseCond' as input then we abort the match
*/
fprintf(stderr," matched rule so far, now checking conditions\n");
- if (peepBlock->postFalseCond &&
+ if (pcin && peepBlock->postFalseCond &&
(pCodeSearchCondition(pcin,peepBlock->postFalseCond) > 0) )
matched = 0;
}
- if(matched && pcin) {
+ if(matched) {
pCode *pcprev;
pCode *pcr;
printpCodeString(stderr,peepBlock->target->pcHead,10);
fprintf(stderr,"first thing matched\n");
pc->print(stderr,pc);
- fprintf(stderr,"last thing matched\n");
- pcin->print(stderr,pcin);
+ if(pcin) {
+ fprintf(stderr,"last thing matched\n");
+ pcin->print(stderr,pcin);
+ }
/* Unlink the original code */
pcprev = pc->prev;
pcprev->next = pcin;
- pcin->prev = pc->prev;
- pCodeDeleteChain(pc,pcin);
+ if(pcin)
+ pcin->prev = pc->prev;
+
+ {
+ /* DEBUG */
+ /* Converted the deleted pCodes into comments */
+
+ char buf[256];
+
+ buf[0] = ';';
+ buf[1] = '#';
+
+ while(pc && pc!=pcin) {
+ pCode2str(&buf[2], 254, pc);
+ pCodeInsertAfter(pcprev, newpCodeCharP(buf));
+ pcprev = pcprev->next;
+ pc = pc->next;
+ }
+ }
+
+ if(pcin)
+ pCodeDeleteChain(pc,pcin);
/* Generate the replacement code */
pc = pcprev;
/* If the replace pcode is an instruction with an operand, */
/* then duplicate the operand (and expand wild cards in the process). */
if(pcr->type == PC_OPCODE) {
- if(PCI(pcr)->pcop)
- pcop = pCodeOpCopy(PCI(pcr)->pcop);
+ if(PCI(pcr)->pcop) {
+ /* The replacing instruction has an operand.
+ * Is it wild? */
+ if(PCI(pcr)->pcop->type == PO_WILD) {
+ int index = PCOW(PCI(pcr)->pcop)->id;
+ fprintf(stderr,"copying wildopcode\n");
+ if(peepBlock->wildpCodeOps[index])
+ pcop = pCodeOpCopy(peepBlock->wildpCodeOps[index]);
+ else
+ fprintf(stderr,"error, wildopcode in replace but not source?\n");
+ } else
+ pcop = pCodeOpCopy(PCI(pcr)->pcop);
+ }
fprintf(stderr,"inserting pCode\n");
pCodeInsertAfter(pc, newpCode(PCI(pcr)->op,pcop));
} else if (pcr->type == PC_WILD) {
pCodeInsertAfter(pc,peepBlock->wildpCodes[PCW(pcr)->id]);
+ } else if (pcr->type == PC_COMMENT) {
+ pCodeInsertAfter(pc, newpCodeCharP( ((pCodeComment *)(pcr))->comment));
}
pc = pc->next;
- pc->print(stderr,pc);
+ if(pc)
+ pc->print(stderr,pc);
pcr = pcr->next;
}
return 1;
}
-
+ next_rule:
peeprules = peeprules->next;
}
projects / fw / sdcc / blobdiff